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U tube gradient heat storage device and method for manufacturing the same

A heat accumulator and gradient technology, applied in the U-tube gradient heat accumulator and its manufacturing field, can solve the problem that the two ends of the heat exchange tube cannot be welded to the box at the same time, the thermal expansion and contraction of the heat exchange tube box are inconsistent, and the exchange Heat pipe liquid phase retention and other problems, to avoid liquid phase retention and gas plug problems, simplify the assembly process, and achieve smooth circulation

Inactive Publication Date: 2015-03-25
SHANGHAI INDAL ELECTRICITY ENERGY TECHCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the problem that the heat exchange tubes of the existing tube-box heat accumulator pass through both sides of the box body, and the thermal expansion and contraction of the heat exchange tube box body are inconsistent, resulting in that the two ends of the heat exchange tube cannot be connected with the box body at the same time. Welding, which in turn leads to the need to bend the heat exchange tube upwards and set the inlet and outlet at a position higher than the heat storage medium, resulting in a series of problems such as liquid phase retention in the heat exchange tube, gas plug, and low heat exchange efficiency. A U-shaped U-tube gradient heat accumulator with tubes entering and leaving the box from one side, and manufacturing method of the U-tube gradient heat accumulator

Method used

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  • U tube gradient heat storage device and method for manufacturing the same
  • U tube gradient heat storage device and method for manufacturing the same
  • U tube gradient heat storage device and method for manufacturing the same

Examples

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Embodiment 1

[0036] Embodiment 1: a kind of U tube gradient accumulator, such asfigure 1 , figure 2 , Figure 5 shown. The device includes a heat storage medium container. The heat storage medium container is a horizontal cylindrical cylinder body 6. The cylinder body 6 is provided with a tube plate 2 at one end and a shell with closed sides. Support 8. The end of the cylinder is sealed at the junction with the tube sheet 2 . The cylinder body 6 is filled with heat storage medium, and the heat exchange tube extends into the heat exchange medium in the cylinder body from one end of the cylinder body in a U shape, and both ends of the heat exchange tube pass through the tube plate at one end of the cylinder body. Each heat exchange tube includes a heat exchange main pipe 1 at both ends that passes through the tube sheet 2 and is sealed and welded to the tube sheet, and a plurality of U-shaped heat exchange branch pipes 4 located in the cylinder body. The central axis of the heat exchang...

Embodiment 2

[0047] Embodiment 2: a kind of U tube gradient accumulator, such as Figure 6 shown. The height of the header 3 of this device is greater than the height of the heat exchange main pipe 1 and the heat exchange branch pipe 4. The headers 3 of adjacent heat exchange tubes are staggered from each other in the horizontal direction, and overlapped with each other in the vertical direction, so that the heat exchange tubes are arranged more closely. .

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Abstract

The invention relates to a U tube gradient heat storage device and a method for manufacturing the same, and solves a series of problems of the existing tube box type heat storage device heat exchange tubes such as liquid phase retention, gas lock and low heat exchange efficiency. The U tube gradient heat storage device comprises a heat storage medium container and heat exchange tubes which pass through the heat storage medium container, wherein heat exchange medium circulates in the heat exchange tubes. The U tube gradient heat storage device is characterized in that: a tube plate is arranged on one side of the heat storage medium container, another sides of the heat storage medium container are closed sealed shells, the heat exchange tubes are U-shaped tubes, the bending parts of the heat exchange tubes are arranged in the heat storage medium container, and two ends of the heat exchange tubes pass through the tube plate and are welded, sealed and fixed with the tube plate. Cold shrinkage and thermal expansion of the heat exchange tubes is not limited by the heat storage medium container, the heat exchange tubes can be set as horizontal tubes, so as to prevent liquid phase retention and gas lock problems which are caused by bending of the heat exchange tubes, baffle plates and support plates are adopted to divide the heat storage medium container into a plurality of heat storage chambers, temperature gradient is formed in the heat storage medium container, and heat exchange efficiency is increased.

Description

technical field [0001] The invention relates to a heat exchange device, in particular to a U-tube gradient heat accumulator and a manufacturing method thereof. Background technique [0002] In the traditional tube-box heat accumulator, the heat transfer medium passes through the heat exchange tubes, the heat storage medium is placed in the box-shaped shell, and the heat exchange tubes pass through the heat storage medium and pass through the two sides of the box-shaped shell respectively. out. [0003] The advantages of the tube-box heat accumulator: stable placement, simple support structure, easy manufacture, convenient transportation, suitable for working conditions where the thermal expansion and contraction of direct heat exchange tubes are not large at low temperatures. [0004] Disadvantages of the tube-box heat accumulator: ①Because the thermal expansion and contraction of the heat exchange tube is greater than the thermal expansion and contraction of the box, the h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28D20/00
CPCY02E60/14
Inventor 朱亚农顾向明姚利森田伟丰彭才元
Owner SHANGHAI INDAL ELECTRICITY ENERGY TECHCO